Thread-guard for sewing-machines



(No Model.)

M. E. CHAPMAN.

THREAD GUARD, FOR SEWING MACHINES. No. 365,793. Patented July 5, 1887.

I hngmphnr, Washington, D; c.

UNITED STATES PATENT Fries.

MOSES E. CHAPMAN, OF DANVERS, MASSACHUSETTS.

TH READ-GUARD FOR SEWING-=MACHINES.

SPECIFICATION forming part of Letters Patent No. 365,793, dated July 5,1887.

Serial No. 229,976. (No model.)

To ctZZ whom, it may concern:

Be it known that I, MosEs E. CHAPMAN, of Danvers, in the county ofEssex, State of Massachusetts, have invented a certain new and usefulImprovement in Thread Guards for SewingzMachines, of which the followingis a description sufiiciently full, clear, and exact to enable anyperson skilled in the art to which said invention appertains to make anduse the same, reference being had to the accompany-- ing drawings,forming part of this specification, in which- Figure 1 is a sideelevation of my improved thread guard;Fig. 2, a bottom plan view of thesame, and Fig. 3 a side elevation showing the guard in position for use.

Like letters of reference indicate corresponding partsin the differentfigures of the drawings.

My invention relates more especially to means for preventing the threador silk from becoming entangled around the spool-spindle of asewing-machine when delivered too rapidly from the spool; and itconsists in a novel construction and arrangement of parts, ashereinafter more fully set forth and claimed, the object being toproduce a simpler and more effective device of this character than isnow in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation.

In the drawings, A represents the guard, B the spool, G the thread, andD the spoolspindle. The body of the guard consists ofa metallic ring,41:, which is provided with four laterally projccting elastic arms, at,which converge toward a common center and have their outer or free endsbent to form steps or catches 2:, adapted to receive the conical head ofthe spool 13. The distance between the catches z is slightly less thanthe diameter of the head of the spool, so that when the guard isattached to the spool a constant spri rig-press ure will be exerted bythe arms m to keep the rim of the spool-head in the catches 2.

In the use of my improvement the spool B is passed through the body .r,and its head y forced between the arms at until it is grasped by thecatches z. The spool provided with the guard is then disposed inposition on the spindle D, and the thread 0 carried over the body 00 tothe tension mechanism H of the sewing-machine in the usual manner. Itwill be obvious that the guard revolves with the spool as the thread isdelivered; and should the thread from any cause be unwound more rapidlythan itis used, it will be prevented by the body a: and arms m fromfalling over the spool-head y and becoming snarled oren tangled aroundthe spindle.

Having thus explained my invention, what I claim is 1. -As an improvedarticle of manufacture, the thread-guard for sewingmachines hereindescribed, the same consisting of a metallic ring provided withlaterally and inwardly projecting elastic arms, the outer ends of saidarms being bent to form catches for receiving the rim of the spool head,and the guard adapted to be held engaged with the spool by thespring-pressure exerted by the arms, substantially as and for thepurpose specified.

2. In a thread-guard of the character described, the body 00, having theconverging elastic arms at, provided with the catches z, combined andarranged to operate substantially as described.

3. The guard A, consisting of the body 00, having the elastic arms at,provided with the catches z, in combination with the spool B,substantially as and for the purpose specified.

MOSES E. CHAPMAN.

IVitnesses:

O. M. SHAW, FRED. U. FRENCH.

